The formation of an active component in V-Mo-Nb-O catalysts of ethane oxidation and ammoxidation  

Summary

Genesis of an active component in V-Mo-Nb-O catalysts for the oxidation and ammoxidation of ethane was studied. It was shown that the mixing of aqueous solutions of initial reactants leads to the formation of MoV complexes in the solution and to sedimentation of a binary Nb-Mo compound. The latter serves as the basis for the formation of the catalyst active component phase (a triple V-Mo-Nb compound with a variable composition of Mo₅O₁₄-like structure) during the subsequent treatment in air at 400°C.